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<title>Class: RockwellHardnessScaleUnit</title>
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<h1>Class: RockwellHardnessScaleUnit</h1>
<h2 class='summaryURI'>http://ontology.dumontierlab.com/RockwellHardnessScaleUnit</h2>
<h2>Asserted Class Hierarchy</h2>
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<a href="Thing___211650690.html" title="http://www.w3.org/2002/07/owl#Thing">Thing</a></li><ul class='minihierarchy'>
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<a href="Unit___1705281914.html" title="http://ontology.dumontierlab.com/Unit">Unit</a></li><ul class='minihierarchy'>
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<span class='active-entity'>RockwellHardnessScaleUnit</span></li><ul class='minihierarchy'>
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<li><a href="RockwellHardness_J___-884574563.html" title="http://www.polymerinformatics.com/DumontierUntisComplex#RockwellHardness_J">RockwellHardness_J</a></li><li><a href="RockWellHardness_L___543881148.html" title="http://ontology.dumontierlab.com/RockWellHardness_L">RockWellHardness_L</a></li><li><a href="RockwellHardness_M___418145754.html" title="http://www.polymerinformatics.com/DumontierUntisComplex#RockwellHardness_M">RockwellHardness_M</a></li><li><a href="RockwellHardness_R___1157690517.html" title="http://www.polymerinformatics.com/DumontierUntisComplex#RockwellHardness_R">RockwellHardness_R</a></li></ul>
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<h2>Annotations (4)</h2>
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<span class='annotation-uri'>http://purl.org/dc/elements/1.1/creator:</span> <span class='literal'>"Ed Cannon"</span></li>
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<span class='annotation-uri'>http://purl.org/dc/elements/1.1/language:</span> <span class='literal'>"@en"</span></li>
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<span class='annotation-uri'>http://purl.org/dc/elements/1.1/source:</span> <span class='literal'>"<a href='http://en.wikipedia.org/wiki/Rockwell_scale' target='ext_ref'>http://en.wikipedia.org/wiki/Rockwell_scale</a>"</span></li>
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<span class='annotation-uri'>comment:</span> <span class='literal'>"The Rockwell scale is a hardness scale based on the indentation hardness of a material. The Rockwell test determines the hardness by measuring the depth of penetration of an indenter under a large load compared to the penetration made by a preload. There are different scales, which are denoted by a single letter, that use different loads or indenters. The result, which is a dimensionless number, is noted by HRX where X is the scale letter."</span></li>
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<h2>Superclasses (1)</h2>
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<a href="Unit___1705281914.html" title="http://ontology.dumontierlab.com/Unit">Unit</a></li>
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<h2>Usage (1)</h2>
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<a href="RockwellHardness___-1528351888.html" title="http://www.polymerinformatics.com/ChemAxiom/ChemAxiomProp.owl#RockwellHardness">RockwellHardness</a> <span class='keyword'>⊆</span> <a href="../objectproperties/hasUnit___1899194023.html" title="http://www.polymerinformatics.com/ChemAxiom/ChemAxiomProp.owl#hasUnit">hasUnit</a> <span class='some'>some</span> <span class='active-entity'>RockwellHardnessScaleUnit</span></li>
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